All of a sudden baby fighting feeding from one breast

Taylor

All of a sudden my baby, almost 3 weeks old, fights eating from my left breast so hard. It’s almost like she can’t latch or stay latched. She shakes her head back and fourth, cries, bobs up and down on my nipple and gets my nipple under her tongue.

This is new behavior within the last 48 hours and she has no trouble with the other side. In fact, when she was first born, she actually nurses better from the left.

Any advice?